div {
  color: teal;
  width: 10px;
  height: 10px;
  background-color: white;
  content: 0 2 4 6 8 10;
}
div .col-red {
  width: 5%;
}
div .col-blue {
  width: 10%;
}
div .col-orange {
  width: 15%;
}
